[lld] Fix R_AVR_7_PCREL and R_AVR_13_PCREL range checking (PR #92695)

[Ben Shi via llvm-commits]

benshi001 wrote:

I wonder how RJMP can jumps over 4kB on the ATtiny85 device. Is RJMP has a different encoding against other devices ? 

https://github.com/llvm/llvm-project/pull/92695